Download Monogram ZBD1850 Specifications
Transcript
GE Consumer & Industrial Technical Service Guide September 2008 18-in. Dishwasher with Top Controls PDW1800 PDW1860 ZBD1850 ZBD1870 31-9175 GE Appliances General Electric Company Louisville, Kentucky 40225 IMPORTANT SAFETY NOTICE The information in this service guide is intended for use by individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use. WARNING To avoid personal injury, disconnect power before servicing this product . If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks. RECONNECT ALL GROUNDING DEVICES If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened. GE Consumer Products Technical Service Guide Copyright © 2008 All rights reserved. This service guide may not be reproduced in whole or in part, in any form, without written permission from the General Electric Company. –2– TABLE OF CONTENTS Bottom Door Seal.............................................................................................................................................................. 19 Component Locator Views .......................................................................................................................................... 10 Control Panel....................................................................................................................................................................... 13 Control Panel Features ................................................................................................................................................... 8 Custom Panel Installation ............................................................................................................................................. 6 Detergent/Rinse Module................................................................................................................................................ 15 Dishwasher Components.............................................................................................................................................. 13 Dishwasher Tub Seal ....................................................................................................................................................... 19 Door Assembly ................................................................................................................................................................... 17 Door Panel............................................................................................................................................................................ 13 Door Latch Assembly...................................................................................................................................................... 14 Drain Pump Assembly .................................................................................................................................................... 24 Fill Funnel .............................................................................................................................................................................. 21 Heating Element .............................................................................................................................................................. 20 Introduction ........................................................................................................................................................................ 4 Motor Pump Assembly .................................................................................................................................................. 25 Nomenclature ................................................................................................................................................................. 5 Pressure Switch .............................................................................................................................................................. 23 Service Mode ...................................................................................................................................................................... 33 Schematic............................................................................................................................................................................. 39 Specifications ..................................................................................................................................................................... 4 Static Dry System ............................................................................................................................................................. 15 Sump Assembly ................................................................................................................................................................. 27 Troubleshooting ................................................................................................................................................................ 30 Troubleshooting Check List .......................................................................................................................................... 34 Tub Thermistor .................................................................................................................................................................. 28 Warranty .............................................................................................................................................................................. 40 Washability Complaints ............................................................................................................................................... 38 Water Valve ......................................................................................................................................................................... 22 –3– Introduction The 18-in. Built-In Dishwasher with top controls has a compact size, allowing the unit to fit in areas as small as 18 inches (45.72 cm) wide, 22 inches (55.88 cm) long, and 34 inches (86.36 cm) high. It is compact in size, yet still delivers the performance of larger units. With a low power usage, this product model meets ENERGY STAR® guidelines for energy efficiency. The 18-in. Built-In Dishwasher with top controls has the following wash cycles: HEAVY, NORMAL, LIGHT, GLASSES, AIR-DRY, SPEED and RINSE. Specifications Electrical Rating 120 Volts, 60 Hz ±10% Separate Circuit 4.5 to 5.5 Amps Motor (HP) 1/5 Motor (Amps) 1 ±10% Heater Wattage – Wash/Dry 465 ±10% Total Amps (Load Rated) 5 ±10% Component Resistance (OHMS) Timer Motor 1460 ±10% Heating Element 31 ±5% Pump Motor Windings Drain 27 ±10% Wash (Blue to Red) 47 ±10% Run Windings – Main 17.5 ±10% (Blue to Black) Water Valve Solenoid 1140 ±5% Total Amps (Load Rated) 5 ±10% Water Supply Suggested Minimum 120 °F to 150 °F Incoming Water Temperature (49 °C to 66 °C) Sump Water Temperature 145 °F ±5 °F With Outer Door In Place (63 °C ±3 °C) Water Charge 2.54 to 3.27 Quarts (2.4 to 3.1 Liters) Pressure 20 Min./120 Max. (PSI) 138 Min./827 Max. (kPa) Connection (NPT) 3/8 In. (0.95 cm) Consumption (Total) 4.7 to 6.1 Gallons (17.8 to 23.1 Liters) Water Valve Flow Rate 1.8 ±14% (GPM) (6.81 LPM ±14%) Water Circulation Rate (GPM) 10 ±10% (37.85 LPM ±10%) Water Fill Time (Seconds) 30 (±1) –4– Nomenclature Model Number Z B D 1 8 0 0 M S S Brand Z = Monogram P = Profile Exterior Color SS = Stainless Steel BB = Black WW = White II = Custom panel and handle required Product Type BD = Built-In Dishwasher DW = Dishwasher Model Designator Compact 18-in. Model Year Designator Nomenclature Serial Number The first two characters of the serial number identify the month and year of manufacture. Example: AR123456S = January, 2008 The serial plate of your dishwasher is located on the tub wall, just outside the door. The service information sheet is located behind the kick panel. A - JAN D - FEB F - MAR G - APR H - MAY L - JUN M - JUL R - AUG S - SEP T - OCT V - NOV Z - DEC –5– 2008 - R 2007 - M 2006 - L 2005 - H 2004 - G 2003 - F 2002 - D 2001 - A 2000 - Z 1999 - V 1998 - T 1997 - S The letter designating the year repeats every 12 years. Example: T - 1974 T - 1986 T - 1998 Custom Panel Installation Some models of this dishwasher are designed for use with a 3/4-in. custom front panel. For easier installation, the custom panel and custom handle should be attached before installing the dishwasher. Use the template from Pub. No. 31-30244 supplied with the dishwasher to locate mounting screws and spacers on the custom panel. Locate the vertical center of the panel at the top. Use a carpenter's square to draw a centerline from top to bottom. Note: A custom handle must be installed on the custom panel. Install the custom handle 4 1/2 inches max. from the top of the panel. Parts Included: (2) Brackets (4) 1/2-in. Phillips flat-head screws (2) Spacer pads (2) Metal spacers (2) 1-in. Phillips flat-head screws (2) 3/4-in. Phillips round-head screws 3. Align Template to Panel Trim the template on the dotted line along all sides. Place the template on the panel aligned with the top edge and the centerline. Use tape to hold in place. IMPORTANT: If the template is not aligned with the top edge of the panel, the 1/2 inch minimum gap will not be maintained. This 1/2 inch minimum gap must be maintained to prevent condensation and damage to the control panel from screw heads. 1. Custom Panel Size Requirements Height - Panel height should be 26 25/32 inches (68 cm). The top of the custom panel must be flush with the top of the door. The 1/2-inch minimum gap between the top of the door and the bottom of the countertop must be maintained. Use an awl to mark the screw hole locations indicated on the template. Remove the template. Width - The panel width must be 17 1/2 inches (44.4 cm). If the panel width is less than 17 1/2 inches, it will not cover the dishwasher frame. Note: To ensure optimum door balance performance, the custom panel must not weigh more than 8 lbs. Mark center screw holes Countertop Countertop 1/2 minimum 1/2"in. minimum Minimum 1/2 in. Minimum 1/2" gapgap for clearance clearance 2. Draw Centerline Place the custom panel on a flat surface with the appearance side down. 4. Install Mounting Screws and Spacers Note: The custom panel is secured to the dishwasher door with the metal spacers, screws and brackets provided. The metal spacers and brackets will slip into the slots on the dishwasher door and control panel. Align the metal spacers over the top pilot holes. Ensure the thick, recessed side is facing up. Drive the supplied 1-in. Phillips flat-head screws through the metal spacers and into the panel. Align the brackets over the bottom pilot holes. Ensure the curved lip is –6– facing up. If the back surface of the panel is not flat, use the spacer pads provided. Drive the 1/2-in. Phillips flat-head screws through the brackets and into the panel. Stand the dishwasher upright and open the dishwasher door to remove the 2 plug buttons, one on each side as shown. Place the supplied 3/4-in. Phillips round-head screws inside the plastic sleeve and drive through the inner door and into the custom panel. Bracket Spacer Pad Replace the 2 plug buttons by pressing them firmly back into the plastic sleeve. Spacer 5. Install Custom Handle A custom handle must be installed on the panel before the panel is secured to the dishwasher door. The handle should be installed so that it aligns with adjacent drawer handles, or 4 1/2 inches maximum from the top of the panel. Secure the handle in the same manner as the cabinet handles. Screws must be countersunk into the panel. Custom panel Caution: Do not overtighten screws. Excessive tightening of the screws could damage door edges. 7. Check Door Balance To check the door balance, hold the top of the dishwasher firmly. Check the door balance by opening and closing the door. Screws must be countersunk into panel If the door drops when released, increase the spring tension. If the door rises when released, decrease the spring tension. 4 1/2" Max from top of panel Using a T25 Torx driver, adjust in the direction shown. Adjust both sides equally. Handle Custom door panel 6. Install Assembled Panel Increase Increase Secure the panel to the door by inserting the top metal spacers and bottom brackets into the matching slots on the dishwasher door and control panel. Decrease Make sure both metal spacers and both brackets engage the slots. Dishwasher door Custom panel Decrease Press the panel against the door and push downward until the metal spacers and brackets are fully engaged in the slots. The panel should align evenly with the top and sides. –7– Parts Supplied (2) (2) Spacer Parts Spacer Pads (2) 3/4-in. Round(2) 3/4" Round-head Head Screws screws Brackets (2)(2)Brackets (2) 1-in. Phillips (2) 1" Phillips at-head Flat-Head Screws screws Metal spacers (2)(2)Metal Spacers (4) 1/2-in. Phillips (4) 1/2" Phillips at-head Flat-Head Screws screws Control Panel Features 3 ON OFF 1 DELAY HOURS 1 - 24 HR. 2 HEAVY NORMAL LIGHT GLASSES AIR-DRY SPEED LOW RINSE AID 5 RINSE CYCLE SELECT CLEAN 5 1 ON/OFF With door open, press ON/OFF button to turn the unit ON to begin operation and OFF at the end of a wash cycle. The ON/OFF light is displayed when the dishwasher is ON. 2 WASH CYCLE SELECTIONS Press CYCLE SELECT button to choose wash cycle. The light under the cycle name will display to indicate which cycle has been selected. NOTE: All cycle times and water usage information contained in this section are approximate values. Actual results will depend on several factors including, but not limited to, inlet water temperature and household water pressure. HEAVY 6.2 gallons, 125 minutes This cycle is meant for heavily soiled dishes or cookware with dried-on or baked-on soils. This cycle may not remove burned-on foods. Everyday dishes are safe to be used in this cycle. This cycle also includes heated dry. NORMAL 5.3 gallons, 100 minutes This cycle is meant for loads of everyday dishes, glasses and cookware with medium soils that have not been pre-rinsed. This cycle also includes heated dry. LIGHT 4.4 gallons, 85 minutes This cycle is meant for loads of everyday dishes, glasses and cookware with light soils that have been pre-rinsed. This cycle also includes heated dry. GLASSES 3.5 gallons, 65 minutes This cycle is meant for lightly soiled glassware. This cycle has less heating during the wash and rinse to protect your glassware. This cycle also has a lower temperature heated dry. AIR-DRY 3.5 gallons, 50 minutes This cycle is meant for loads of everyday dishes, glasses and cookware with light soils that have been pre-rinsed and should air dry naturally. This cycle does not include heated dry. SPEED 5.3 gallons, 80 minutes This cycle is meant for loads of everyday dishes, glasses and cookware with medium soils that have not been pre-rinsed. This cycle features reduced wash times to allow for faster cycle completion. This cycle also has a reduced time heated dry. RINSE 1 gallon, 10 minutes For rinsing partial loads that will be washed later. Do not use detergent with this cycle. This cycle does not include heated dry. –8– 3 DELAY HOUR SELECTION This option allows you to delay the start of a wash cycle for up to 24 hours. With the door open, turn the dishwasher ON by pressing the ON/OFF button; then press DELAY HOURS button to choose the number of hours you want to delay the start of the wash cycle. The hours will show in the display window. NOTE: To cancel the DELAY HOURS option before the start of the cycle, repeatedly press the DELAY HOURS button until the display is blank or reads “00.” 4 STARTING A CYCLE After selecting the wash cycle (Step 2) and delay hours (Step 3), if desired, close the door of the dishwasher to start the cycle or begin the DELAY HOURS countdown. When the cycle starts, the drain begins and approximately 60 seconds later the water fill begins. 5 STATUS INDICATORS LOW RINSE AID The red light will display when the rinse aid dispenser needs to be refilled with liquid rinse aid. Use of Jet-Dry® or Cascade Crystal Clear® rinse agent removes spots and prevents new film buildup on your dishes, glassware, flatware, cookware and plastics. See page 6 for instructions on refilling the rinse aid dispenser. CLEAN The green light will display and a beep will sound to alert you that the wash cycle is complete. –9– Component Locator Views Front View (Door Panel Removed) Right Side View (Insulation Removed) Electronic Control Panel Door Tension Spring Detergent/Rinse Module Fill Funnel Fill Hose Pressure Switch Hose Drain Pump Pressure Switch Access Panel Control Panel View – 10 – Interior View (With Bottom Rack Removed for Clarity) Top Rack Spray Arm Spray Arm Heater Detergent/Rinse Module Static Dry Vent Control Panel Detergent/Rinse Module Compartment View Detergent Compartment Sight Glass Rinse Agent Cap Compartment Lid – 11 – Interior View of Basin (With Racks Removed) Heating Element Filter Assembly Spray Arm Clamp Nut Sump Screen Micro-filter Bottom View (Looking Up) Sump Tub Thermistor Motor Pump Assembly – 12 – Drain Pump Capacitor Dishwasher Components Throughout this manual, features and appearance may vary from your model. Door Panel The door panel covers the door to the dishwasher and protects the detergent/rinse module electronics. For custom door panel installations, see Custom Panel Installation. Removal Control Panel The control panel is located on the door assembly behind the door panel. The control panel consists of a 2-board push-button keypad with LED indicators and a power board assembly. Removal and Installation 1. Remove the door panel. (See Door Panel.) 2. Remove the 6 Phillips-head screws from the top of the door assembly. 1. Disconnect power. 3. Remove the 2 Phillips-head screws from the door switch and latch assembly. 2. Open the dishwasher door. 3. Remove the lower 6 Phillips-head screws from the door panel. 4. Remove the control panel from the dishwasher door. Power Board 1. Remove the 2 Phillips-head screws from the power board cover. 4. Back out the 6 Phillips-head screws that hold the control panel cover to the door assembly 1/2 inch. Remove the door panel. 2. Mark and disconnect the terminals. 3. Remove the 2 Phillips-head screws from the power board. – 13 – (Continued next page) User Interface Boards Door Latch Assembly 1. Disconnect the 2 wire harnesses from the power board. The door latch assembly is located on the door assembly behind the control panel cover. The dishwasher will not operate until the door is closed, the latch engages the door catch (holding the door firmly against the seal), and the normally open contacts of the double-pole, single-throw door safety switch are closed. Removal and Installation 2. Remove the 2 Phillips-head screws from the power board tray. 1. Disconnect the electrical supply from the dishwasher. 2. Open the dishwasher door. 3. Remove the door panel. (See Door Panel.) 4. Remove the control panel from the dishwasher door. (See Control Panel.) 5. Remove the 2 screws and the door latch assembly. 3. Remove the 5 Phillips-head screws from the 2 user interface boards. 4. Remove the 2 boards and connecting wire harnesses. 6. Remove the door switch from the door latch assembly. 7. Tag and disconnect the appropriate wire terminals from the door switch. – 14 – Static Dry System Detergent/Rinse Module The static dry system operates through a vent located behind the left side of the door panel. The vent allows hot air to exit the dishwasher tub and gradually remove moisture. The detergent/rinse module sends a signal to turn on the "LOW RINSE AID" LED on the control panel when the rinse agent is low. The detergent/rinse module automatically dispenses both the detergent and the rinse agent at the appropriate times. The module is activated twice during a wash cycle. Removal 1. Open the dishwasher door. 2. Remove the door panel. (See Door Panel.) 3. Remove the control panel (see Control Panel) and allow the control panel to hang against the dishwasher door. The first time the module is activated (1), the lever slides up the right-hand path of the connecting rod. 4. Unscrew the static vent channel cover and remove the assembly as shown below. Inspect the cover for hard water/lime deposits or debris and clean if necessary. 1 Cover This action moves the cover catch (2) and releases the detergent cover. Channel 2 5. Inspect the o-ring. If the o-ring shows obvious signs of wear or damage, replace the duct vent and gasket assembly. Cover When deactivated (3), the lever resets to rest under the notch in the center of the connecting rod. O-Ring Duct Vent 3 – 15 – (Continued next page) When activated for the second time in a cycle, the lever lifts the connecting rod by the notch, lifting the rinse dispenser plunger (4) and releasing the rinse agent. When deactivated, the lever returns to its original starting position. 5. Remove the 3 screws and bottom mounting bracket. 4 Bracket 6. Remove the detergent/rinse module from door assembly. Removal and Replacement 1. Disconnect power. 2. Remove the door panel. (See Door Panel.) 3. Disconnect the 4 terminals from the detergent/ rinse module. Detergent/Rinse Module 2 4. Remove the 3 screws and top mounting bracket. Bracket – 16 – 10. Mark the position of the spring bolt key in the mounting bracket with a felt-tip marker. Door Assembly Removal and Replacement 1. Disconnect power. 2. Carefully pull the dishwasher out from its installation. Key 3. Remove the control panel. (See Control Panel.) Bracket 4. Remove the door foam wire guide and place the control panel on a cloth or cardboard protected surface. 5. Remove the detergent/rinse module. (See Detergent/Rinse Module.) 6. Remove the static dry system. (See Static Dry System.) 7. Remove the bolt and ground wire from the door. 8. Remove the wire harness from the door. 11. Pull the spring and spring bolt key from the mounting bracket. 12. Lift the bottom of the spring loop from the hinge arm stud. Wire Harness Bolt and Ground Wire Note: There is a door hinge assembly on both the left and right sides of the dishwasher. Both door hinge assemblies must be removed in order to remove the door. The procedure to remove the right-side door hinge assembly is outlined in steps 9 through 19. The left-side door hinge assembly is identical. Loop Stud 9. Remove the 4 screws, access panel, and toekick panel from the dishwasher. – 17 – (Continued next page) 13. Open the dishwasher door approximately 30 degrees. Caution: The star washer is easily damaged and should not be reused. 14. Lift the bottom hinge arm up from the bottom hinge, far enough to expose the hook. Star Washer Hook 17. Remove the hinge pin from the dishwasher door hinge. Lift Hinge Pin 15. Close the dishwasher door. Caution: The star washer is easily damaged during removal and should not be reused. Order a new set of star washers (part number: WD01X10254). 16. Remove the star washer from the dishwasher door hinge. 18. Repeat steps 3 through 10 to remove the leftside door hinge assembly. 19. Remove the dishwasher door from the dishwasher. – 18 – Bottom Door Seal Dishwasher Tub Seal The bottom door seal prevents water leakage. The seal is fitted in a pinched metal groove at the bottom of the dishwasher door. The dishwasher tub seal prevents water leakage. The seal is fitted in a seal channel that lines the rim of the dishwasher tub. WARNING: The pinched metal groove is sharp. Wear Kevlar gloves when removing or installing the bottom door seal. Failure to comply may result in personal injury. Removal and Replacement It is necessary to remove the door assembly to access the bottom door seal. (See Door Assembly.) The seal is pulled out from the pinched metal groove. 1. Open the dishwasher door. 2. Grasp one end of the dishwasher tub seal and peel it away from the seal channel. Seal Channel Tub Seal Door Seal 3. Reverse the above procedure to install. Pinched Metal Groove To install the bottom door seal it will be necessary to open the pinched metal groove. Make sure the seal is seated properly in the metal groove before pinching closed. Run your finger over the groove to make sure it is smooth and even for a proper seal. Note: When installing the tub seal, make sure it is seated properly in the seal channel. Run your finger over the seal to make sure it is smooth and even for a proper seal. A correctly installed gasket will have both ends of the gasket equidistant from the bottom of the tub. Make sure the seal is seated properly in the seal channel. – 19 – Heating Element The heating element maintains water temperature during the wash and rinse cycles and heats the air during the static dry cycle. (The heating element has an approximate resistance value of 29.5 to 32.5 Ω.) To check operation, see step 9 of Service Mode. Allow one minute before opening the dishwasher door and note if heat is present. Removal and Replacement 1. Disconnect power. 7. Remove the nut and ground wire. 2. Open the dishwasher door. 8. Remove the lock washer and spacer bracket. 3. Remove the top and bottom dishwasher racks. Spacer Bracket 4. From underneath the dishwasher tub, locate the wires leading to the heating element. Lock-washer Nut 5. Pull down the nylon covers, rubber wire protectors, and plastic strain reliefs from the wire terminals. 2 Wire Covers Ground Wire 9. Release the 2 heating element clamps. 2 Wire Protectors 2 Strain Reliefs 6. Disconnect the 2 terminal lugs from the heating element. 10. Lift up and remove the heating element from the dishwasher. – 20 – 4. Loosen the clamp and disconnect the fill funnel hose from the fill funnel. Fill Funnel The fill funnel is mounted on the right side of the tub. Its purpose is to provide a method of supplying water for the wash and rinse cycles. The fill funnel provides an air gap, which prevents wash water from siphoning back into the water supply system if the water pressure drops to less than atmospheric pressure. The fill funnel also allows air into the tub to permit airflow for dish drying. 5. Remove the fill funnel from the dishwasher. Clamp Fill Funnel Removal and Replacement Fill Funnel Hose 1. Fold back the insulation surrounding the fill funnel assembly. 2. Open the dishwasher door. 3. Rotate the fill funnel cap counterclockwise and remove it from the fill funnel threads. Funnel Cap Turn CCW Note: Make sure that the clear plastic air tube is looped around that part of the fill funnel that protrudes into the dishwasher tub and mates with the fill funnel cap. Threads – 21 – 5. Remove the clamp and disconnect the tub fill hose from the water valve assembly. Water Valve The water valve is solenoid operated and regulated by the electronic control. The flow of water is controlled by a rubber flow washer capable of maintaining a flow rate of 1.8 ±14% gallons per minute (6.81 ±14% liters per minute) with incoming water pressure of 20 to 120 PSI. The water valve is mounted to the left hinge support of the dishwasher. Tub Fill Hose Valve Assembly Removal and Replacement 1. Disconnect power. Clamp 2. Remove the 4 screws, access panel, and toekick panel from the dishwasher. 6. Disconnect the 2 wires from the water fill valve assembly. Access Panel Shown with access panel removed. Toe-Kick Panel 3. Disconnect the incoming water line from the water fill valve port. 7. Remove the 4 screws, and water fill valve from the mounting bracket. Retain the mounting bracket and screws. 4. Remove the 2 screws and mounting bracket from the dishwasher. Mounting Bracket Mounting Bracket Port Shown with water line removed. – 22 – 5. Remove the pressure switch hose from the pressure switch. Pressure Switch The pressure switch is a water valve safety device. It is located under the tub at the right, front corner. A clear plastic tube, (the pressure switch hose), runs from the float switch, around the fill funnel, and to the sump. As the dishwasher basin fills with water, the air pressure in the pressure switch hose increases. Normally, the electronic control regulates the amount of time the water fill valve remains open. If the water fill valve remains energized, the overfilling of the basin increases the air pressure in the pressure switch hose, causing the pressure switch to open the circuit to the electronic control and closing the circuit to the drain pump. The drain pump then empties the water in the sump. Pressure Switch Hose 6. Turn the float switch clockwise to align the mounting tab vertically with the mounting hole and remove the pressure switch from the dishwasher frame. Right side of dishwasher showing the path of the pressure switch hose. Turn Mounting Tab Fill Funnel Mounting Hole Pressure Switch Hose 7. Label and disconnect the three wires from the pressure switch. Remove the pressure switch. 3 Terminal Lugs Pressure Switch Removal and Replacement 1. Disconnect power. 2. Carefully pull the dishwasher out from its installation. 3. Remove the 4 Phillips-head screws, access panel, and toe-kick panel from the dishwasher. 4. Remove the 10 screws and the right side panel. – 23 – 6. Remove the 2 Phillips-head screws that attach the pump mounting bracket to the frame. Drain Pump Assembly The drain pump assembly is located under the tub at the right, rear corner. The drain pump operates on 120 VAC and is energized 60 seconds after the wash pump shuts down, to remove any water in the dishwasher sump. The drain pump forces the water out the drain line. A check valve flapper on the drain pump prevents the dirty water from reentering the sump. Removal and Replacement 1. Disconnect power. 2. Carefully pull the dishwasher out from its installation. 3. Remove the 4 Phillips-head screws, access panel, and toe-kick panel from the dishwasher. 4. Remove the drain tube (not shown) from the drain tube port. Caution: The clamp is easily damaged during removal and should not be reused. Replace the old clamp with a new universal clamp (part number: WH1X2036). 7. Remove the clamp from the sump interconnect hose. 8. Remove the drain pump from the sump interconnect hose. Clamp Port Interconnect Hose Drain Pump 5. Label and disconnect the two wires from the drain pump. 9. Remove and save the 2 screws, lock washers, and mounting bracket from the drain pump. Mounting Bracket 2 Screws 2 Lock-washers – 24 – Motor Pump Assembly The motor pump assembly is located under the tub behind the sump assembly. This dishwasher model uses a capacitor start induction motor. The motor rotates clockwise (as viewed from the terminal end) and draws approximately 1 amp (±10%) at 120 VAC (±10%). Caution: The clamp is easily damaged during removal and should not be reused. Replace the old clamp with a new universal clamp (part number: WH1X2036). 5. Remove the clamp from the motor sump interconnect hose. Removal and Replacement 1. Disconnect power. 2. Carefully pull the dishwasher out far enough from its installation to access the drain pump from the rear of the dishwasher. Clamp 3. Label and disconnect the 2 wires to the capacitor. Interconnect Hose Caution: The clamp is easily damaged during removal and should not be reused. Replace the old clamp with a new universal clamp (part number: WH1X2036). 6. Remove the clamp from the main conduit interconnect hose. Capacitor Clamp 4. Label and disconnect the 2 terminals to the motor wire connector. Interconnect Hose Connector – 25 – (Continued next page) Caution: The clamp is easily damaged during removal and should not be reused. Replace the old clamp with a new universal clamp (part number: WH1X2036). 7. Remove the clamp from the motor to the washer arm interconnect hose. Lock Nut Interconnect Hose Clamp As seen from right side of dishwasher. Note: Do not attempt to remove the Phillips-head screw and locknut that connect the motor mount to the dishwasher frame. 9. Pull the motor mount back far enough to clear the motor tab, work the motor from the attaching hoses, and remove the motor pump assembly from the dishwasher. 8. Disconnect the ground wire from the wash pump motor assembly. Motor Mount Pull Out Motor Tab Ground Pull Out Motor Pump Assembly As seen from rear of dishwasher. Motor Mount Screw – 26 – 6. Remove the clamp from the hose that connects the sump to the drain pump assembly. Sump Assembly The sump assembly consists of the filter assembly, micro-filter, sump clamping nut, sump gasket, and sump. The filter assembly prevents large particles from reaching the micro-filter and the micro-filter prevents small particles from reaching the sump. The filter assembly rests above the sump and the micro-filter sits above the sump basin. The clamping nut holds the sump gasket and sump to the bottom of the dishwasher. The filter assembly, micro-filter, and sump clamping nut are accessed from inside the dishwasher. The gasket and sump are located under the tub in front of the motor pump assembly. Clamp 7. Open the dishwasher door and remove the bottom rack (not shown). Removal and Replacement 1. Disconnect power. 8. Remove the filter assembly. 2. Carefully pull the dishwasher out from its installation. 3. Remove the 4 Phillips-head screws, access panel, and toe-kick panel from the dishwasher. 4. Remove the pressure switch hose from the sump. Filter Assembly Pressure Switch Hose Sump 9. Remove the micro-filter. Caution: The clamp is easily damaged during removal and should not be reused. Replace the old clamp with a new universal clamp (part number: WH1X2036). Micro-filter 5. Remove the clamp from the hose that connects the sump to the wash pump motor hose. Clamp Interconnect Hose – 27 – (Continued next page) Note: The sump clamping nut turns counterclockwise and may be difficult to remove. It may be necessary to insert a screwdriver or other tool between the clamping nut tabs to enable you to apply sufficient torque to break the factory seal. 10. Remove the clamping nut. Tub Thermistor The tub thermistor is located under the tub and is attached to the left side of the sump with 2 lock tabs. A thermal mastic is applied to the flat side of the thermistor where it makes contact with the underside of the tub. During the hot wash cycle, the thermistor senses the water temperature and turns the heating element off when the water reaches 128°F. Clamp Nut Note: If the thermistor is not operating, the hot wash cycle will default to a set time for the heating element to cycle. The thermistor has a negative coefficient. As the temperature at the contact point on the tub increases, the thermistor's resistance decreases. The thermistor has an approximate resistance value of 56.5K Ω at 72°F. Tabs To remove the thermistor: Note: Wear latex gloves to perform this repair. 1. Disconnect power. 2. Open the dishwasher door and remove the bottom rack. 3. Remove the dishwasher from its installation. 4. Lay the dishwasher on its back. 5. Disconnect the thermistor wire harness. 11. Remove the sump gasket (not shown) and sump. Wire Harness – 28 – (Continued next page) 6. Using a small flat-blade screwdriver, lift each of the 2 lock tabs (one on each side) that hold the thermistor to the sump. Tab 7. Slide the thermistor off the sump. Note: Before installing the thermistor, evenly apply white thermal mastic (included in box with part) about 0.10-in. thick over the entire disk. – 29 – Troubleshooting WARNING: Always turn off the electric power supply before servicing any electrical component, making ohmmeter checks, or replacing any parts. Note: After service is completed, be sure all safety grounding circuits are complete, all electrical connections are secure, and all access panels are in place. Troubleshooting the Heating Element The heating element maintains water temperature during the wash and rinse cycles and heats the air during the static dry cycle. (See Specifications for heating element wattage ratings.) To check operation, run service mode test step 9. (See Service Mode.) Open the dishwasher door and note if heat is present. 1. Disconnect dishwasher from electrical supply. Troubleshooting the Door Switch 2. Remove electrical connection from one side of heating element and test continuity. The door switch can be tested using an ohmmeter and the strip circuit. 3. Measure the resistance of the heating element. The resistance should be approximately 31 ohms. 1. Disconnect the electrical supply from the dishwasher. 2. Remove the wire leads from the door switch. Heating Element Strip Circuit 3. Use an ohmmeter to check the door switch for continuity. 4. If the door switch is defective, remove it from the latch assembly. If the door switch is good, check to see if the controller is defective by running the service mode test steps 6 through 10. (See Service Mode.) Door Switch Strip Circuit BK Controller Door Switch BK Pin 5 on CN1 Heater W W PR P6 on Controler Wash Pump W WP BU Pin 9 on CN2 Drain Pump W W DP Pin 7 on CN2 R Water Fill Valve W Y Pin 3 on CN2 Dispenser W R/Y Pin 5 on CN2 – 30 – Controller BK W BK W Heater Pin 5 on CN1 PR P6 on Controler Troubleshooting the Water Valve 6. If the water valve is good, check the filter screen and clean it, if necessary. If the water valve is suspected of faulty operation, refer to the strip circuit and proceed as follows: 7. If there is no voltage present at the water valve solenoid coil, disconnect power and check continuity through the latch switch, timer contacts, pressure switch, and wiring. Repair wiring, as necessary. 1. Disconnect dishwasher from electrical supply. 2. Remove the 4 Phillips-head screws securing bottom of access panel and kick panel. Water Level Too Low 3. Remove valve electrical leads and, using ohmmeter, check resistance of solenoid. (See Specifications for correct ohms reading.) 1. Turn on the dishwasher and allow the bottom of the basin to fill with water. Listen for the water fill cycle to stop and, when it does, open the dishwasher door. The water level should touch the heating element. 4. To check for proper mechanical operation of the water valve, attach a separate 115-volt grounded power source to the valve terminals and metal frame of the dishwasher. Turn the power on for a few seconds and then turn the power off. If water flow does not stop within 2 seconds after turning the valve off, replace the water valve. 2. If the water does not touch the heating element, disconnect power, close the door, and check the incoming water pressure. A minimum incoming water pressure of 20 PSI (138 kPa) is needed to properly fill the dishwasher basin. Water Fill Valve Will Not Shut Off Water Fill Valve Strip Circuit Controller BK W BK W Pin 5 on CN1 Y 1. Turn on the dishwasher and allow the bottom of the basin to start filling with water. Disconnect power while the basin is filling. If water continues to flow, turn off the water supply and replace the water fill valve. 2. If the water turns off when power is disconnected, troubleshoot the electronic control. Replace the defective part. Pin 3 on CN2 Water Fill Valve No Water To Tub 1. Be sure the main water supply and electrical power are turned on. 2. Remove both the service panel and the kick panel. 3. Run service mode test step 6. (See Service Mode.) 4. Use a voltmeter to check for voltage at the water valve solenoid coil. 5. If voltage is present, disconnect power and measure resistance of the water fill valve solenoid coil. (See Specifications for correct ohms reading.) Replace the water valve, if it is defective. – 31 – (Continued next page) Troubleshooting the Wash Pump Motor The wash pump motor does not start immediately when the dishwasher cycle has started. The tub will begin filling with water and the motor will start approximately 40 seconds into the fill cycle. If the motor hums, but will not start, make certain the pump impeller is free from obstructions and the motor shaft can turn freely. If the capacitor is open or shorted, the motor will hum and will not start. Check for 120 VAC (±10%) at the wash pump motor terminals. Take the voltage measurement while "under load" (as the motor is trying to start). This will eliminate the possibility of a poor wiring connection. If the 120 VAC (±10%) is present and the motor will not start, the motor will have to be replaced. Wash Pump Motor Strip Circuit Controller BK W BK W Pin 5 on CN1 WP BU Pin 9 on CN2 Wash Pump – 32 – Service Mode – 33 – Troubleshooting Checklist The troubleshooting checklist is common for all dishwasher models. They use different parts to accomplish the same thing and diagnosis will remain similar. The wiring diagram, schematic, and service mode test are a necessity when making electrical checks. In most cases, an ohmmeter will handle all the tests necessary. When a problem arises, and a possible cause is listed, follow the test and remove or replace procedures as outlined in this Technical Service Manual. To verify the setup of any particular cycle of operation, refer to Control Panel Features. Symptom Check for the Following Remedy Dishwasher will not operate when turned ON. 1. A blown fuse or tripped circuit breaker. 1. Replace the fuse or reset the breaker. 2. Damaged or defective wiring. 2. Repair the wiring. 3. Improper motor resistances. 3. Replace the motor. 4. Defective door switch contacts. 4. Replace the door switch. 5. Defective door latch. 5. Replace the door latch. Dishwasher runs but will not heat. 1. Heater element is open. 1. Replace the heater element. 2. Damaged or defective wiring. 2. Repair the wiring. Dishwasher runs but will not stop. 1. Electronic control inoperative. 1. Replace the electronic control. 2. Damaged or defective wiring. 2. Repair the wiring. Dishwasher runs with door open. 1. Defective door safety switch. 1. Replace the door safety switch. Motor hums but will not start or run. 1. Defective motor bearings. 1. Replace the motor. 2. Defective motor capacitor. 2. Replace the motor capacitor. Motor trips out on internal thermal overload protector. 1. Improper motor voltage. 1. Replace the motor. 2. Motor shaft binding. 2. Replace the motor. 3. Motor windings shorted. 3. Replace the motor. Etching on glassware. 1. Soft water condition (Natural or artificial). Dishwasher continues to fill even though there is no voltage to the fill valve (flooding condition). 1. Defective water fill valve. 2. Debris buildup under the diaphragm in the water fill valve. 1. Have a sample of the water analyzed by the local water department. 1. Replace the water fill valve. 2. Clean out the debris or replace the water fill valve. – 34 – (Continued next page) Symptom No heat during the dry cycle. Dishwasher will not fill with water or will not fill properly. . Dishwasher will not pump out. Water siphons out. Too much water fill. Water leaks from dishwasher. Check for the Following 1. Defective heater element. 2. Damaged or defective wiring. 1. The water supply is turned off. 2. Low water pressure. 3. Defective water fill valve. 4. Obstructed water fill valve or hose. 5. Damaged or defective wiring. 6. Defective pressure switch. 7. Heavy water usage elsewhere in home. 1. Defective drain pump. 2. Defective impeller. 3. Defective electronic control. 1. Drain hose loop too low. 2. Drain line connected to a floor drain not properly vented. 1. Defective water fill valve. 1. Too much water fill. 2. Defective tub seal. 3. Defective vent plate. 4. Dishwasher door not level. 5. Dishwasher not level. 6. Soap suds leak from dishwasher. 7. Loose hose clamps. 8. Loose heater element. 9. Defective water seals. 10. Motor and pump assembly not seated properly in tub liner bottom. – 35 – Remedy 1. Replace the heater element. 2. Repair the wiring. 1. Turn the water supply on. 2. Minimum water pressure of 20 PSI. 3. Replace the water fill valve. 4. Disassemble and clean the water fill valve and hose. 5. Repair the wiring. 6. Replace the pressure switch. 7. Use dishwasher when water usage is at a minimum. 1. Replace the drain pump. 2. Replace the impeller. 3. Replace the electronic control. 1. Move the drain hose to the proper height. 2. Install a vent air gap at counter top. 1. Replace the water fill valve. 1. See previous symptom. 2. Replace the tub seal. 3. Replace the vent plate. 4. Adjust the dishwasher door. 5. Level the dishwasher. 6. Refer to use and care manual. 7. Tighten or replace hose clamps. 8. Tighten heater element mounting nuts. 9. Replace the water seals. 10. Remount the motor and pump assembly in the tub liner bottom. (Continued next page) Sympton Poor washability. Check for the Following 1. Improper loading of dishes, pots, pans, and nesting of silverware. 2. Defective spray arm. 3. Water level should cover heating element. 4. Defective detergent/rinse module. 5. Old, improper amount, or wrong type of detergent used (detergents lose effectiveness in a damp area). 6. Low incoming water temperature. 7. Clogged filter assembly. Poor drying of dishes. 1. Improper loading of dishes, pots, pans, and nesting of silverware. 2. Low incoming water temperature. 3. Water remaining in tub after drain cycle is completed. 4. Defective heating element. Door will not latch. Noisy pump assembly. Detergent left in the dispenser. 5. Damaged or defective wiring. 1. Defective door latch. 5. Repair the wiring. 1. Defective motor bearings. 1. Replace the pump motor. 2. A sucking sound is heard at the end of the cycle. 1. Detergent allowed to stand too long in the dispenser. 2. This is a normal condition. 2. Dispenser was wet when detergent was added. 3. Detergent is binding on detergent/rinse module cover. 4. Detergent cup held closed or blocked by large dishes. cycle is completed. Remedy 1. Instruct the customer on proper loading of the dishwasher. Refer to the Owner's Manual. 2. Check spray arm for proper rotation. 3. See “Dishwasher will not fill with water or will not fill properly” symptom. 4. Replace the detergent/rinse module. 5. Instruct the customer on proper use of dishwasher detergent. Refer to the Owner's Manual. 6. Incoming water temperature of 120°F is required to properly dissolve dishwashing detergents. 7. Clean the filter assembly and microfilter. 1. Instruct the customer on proper loading of the dishwasher. Refer to the Owner's Manual. 2. Incoming water temperature of 120°F is required to properly dissolve dishwashing detergents. 3. See “Dishwasher will not pump out” symptom. 4. Replace the heating element. – 36 – 1. Replace the door latch. 1. Instruct the customer on proper use of dishwasher detergent. Refer to the Owner's Manual. 2. Instruct the customer on proper use of dishwasher detergent. Refer to the Owner's Manual. 3. Replace the heating element. 4. Instruct the customer on proper loading of dishwasher. Refer to the Owner's Manual. (Continued next page) Symptom Noisy pump assembly. Spotting or filming on glasses (reposition of food soil). . Check for the Following 1. Debris in bottom of tub sump area. 2. Pump parts were not properly installed. 3. Impellers are not properly shimmed or are rubbing. 4. Defective motor bearings. 5. A sucking sound is heard at the end of the cycle. 1. Detergent allowed to stand too long in the dispenser or excessive amounts of detergent are being used. 2. Low incoming water temperature. 3. Improper loading of dishes, pots, pans, and nesting of silverware. 4. Water high in mineral content. 5. High incoming water temperature. 6. Improper installation of the dishwasher to a food waste disposal. – 37 – Remedy 1. Clean out the sump area. 2. Inspect the pump and correct any installation errors. 3. Use the shim gage furnished in the impeller seal kit. When the seal is properly shimmed the impellers will be in the correct operating position. 4. Replace the motor. 5. This is a normal condition. 1. Instruct the customer on proper use of dishwasher detergent. Refer to the Owner's Manual. 2. Incoming water temperature of 120°F is required to properly dissolve dishwashing detergents. 3. Instruct the customer on proper loading of the dishwasher. Refer to the Owner's Manual. 4. Have water analyzed. Use of commercially available rinse agents (such as Jet Dry) helps to reduce the spotting by lowering the surface tension of the water (the water then “sheets” off the dishes). 5. Incoming water temperature of 160°F or higher will cause high protein food particles to bake onto the dishes before detergent can remove them. Set water heater tank to deliver 120°F water. 6. Install properly. Refer to Installation Manual. Washability Complaints Rinse Agent – Use rinse agent if spotting or drying is a problem. A rinse agent will improve the water sheeting action and drying performance. Hot Water – Ample supply of water at a temperature of 120°F (60°C) is necessary for best results. Do not use dishwasher soon after using clothes washer or filling bathtub. Water Valve – (See Water Valve.) Loading - Consult Owner’s Manual on loading procedures. Spray Arm – Check to be sure the spray arms spin freely and jets are not clogged. Check to be sure the middle spray arm water conduit is connecting properly to the main conduit. Amount of Water – Make sure dishwasher is level. Check water level, allowing dishwasher to fill normally for first fill. The water level should be to the heating coil. If water level is low, check for clogged screen and check pressure switch. (See Water Valve.) Drying – Water inlet temperature must be at least 120°F (48.9°C) for proper drying. Low water inlet temperature will prevent proper convection air movement and increase drying time substantially. Detergent/Rinse Module Leakage – Some moisture in cup is normal. Detergent must not be soaking wet, oozing out, and down the inner door panel. If a leak is detected, check the detergent/rinse module door lid, latch operation, and gasket seal. (See Detergent/Rinse Module.) Proper Amount of Detergent – Use full detergent cup of fresh detergent in hard water. Use only enough detergent to get good wash performance in soft water. Latch Sight Glass Detergent Compartment Rinse Agent Cap Compartment Lid – 38 – Schematic WARNING: Power must be disconnected before servicing the appliance. Note: Resistance of thermistor at room temperature: 50k Ω with a negative coefficient. Note: Schematic diagram subject to change. Please refer to diagram supplied with product located behind the kick plate. – 39 – 120V 60Hz Warranty GE Dishwasher Warranty. All warranty service provided by our Factory Service Centers, or an authorized Customer Care® technician. To schedule service, on-line, 24 hours a day, visit us at GEAppliances.com, or call 800.GE.CARES (800.432.2737). Staple your receipt here. Proof of the original purchase date is needed to obtain service under the warranty. For The Period Of: GE Will Replace: One Year From the date of the original purchase Any part of the dishwasher which fails due to a defect in materials or workmanship. During this full one-year warranty, GE will also provide, free of charge, all labor and in-home service to replace the defective part. What GE Will Not Cover: ■ Service trips to your home to teach you how to use the product. ■ Damage to the product caused by accident, fire, floods or acts of God. ■ Improper installation. ■ Incidental or consequential damage caused by possible defects with this appliance. ■ Failure of the product if it is abused, misused, or used for other than the intended purpose or used commercially. ■ Replacement of house fuses or resetting of circuit breakers. ■ Cleaning or servicing of the air gap device in the drain line. This warranty is extended to the original purchaser and any succeeding owner for products purchased for home use within the USA. Proof of original purchase date is needed to obtain service under the warranty. In Alaska, the warranty excludes the cost of shipping or service calls to your home. Some states do not allow the exclusion or limitation of incidental or consequential damages. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. To know what your legal rights are, consult your local or state consumer affairs office or your state’s Attorney General. Warrantor: General Electric Company. Louisville, KY 40225 – 40 –